9 Years on Mars

NASA's Mars rover Opportunity just celebrated its ninth anniversary on Mars - a mission that was originally meant to last just 90 days. Although recently eclipsed in the news by its bigger brother Curiosity, Opportunity is still going strong and making valuable scientific discoveries. Launched into space in 2003, Opportunity bounced to a hole-in-one landing in a small crater on Mars' Meridiani Planum on January 25, 2004. It has since spent 3,212 Martian days, or sols, on the surface, slowly moving from target to target, exploring craters, meteorites, unusual rock formations, and finding evidence of past water activity. Over the past 108 months, Opportunity has driven a total of 35.48 kilometers (22.05 miles) across Mars -- not bad for a mission designed to last only three months.

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